Mechanical Expansion Test Plugs | McMaster-Carr

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Pipe Size

Expansion Plug Type

Four Arm Handle

For Pipe ID

Maximum Air Back Pressure

Less than 10 psi

10 psi to 24 psi

25 psi to 49 psi

50 psi to 99 psi

100 psi or greater

Sealing Location

Plate Material

Stainless Steel

Material

Stainless Steel

Deflated Diameter

Overall Height

Handle Material

Stainless Steel

Maximum Temperature

Less than 150° F

150° F to 199° F

200° F to 224° F

225° F or greater

Seal Material

Maximum Water Back Pressure

Less than 50 ft. of head

50 ft. of head to 99 ft. of head

100 ft. of head to 199 ft. of head

200 ft. of head to 249 ft. of head

250 ft. of head or greater

With Bypass

Maximum Pressure

Less than 50 ft. of head

50 ft. of head to 99 ft. of head

100 ft. of head to 199 ft. of head

200 ft. of head to 249 ft. of head

250 ft. of head or greater

Height

Thread Type

Minimum Temperature

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Bypass Connection Port

Plate Color

For Use With

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346 Products

Expansion Plugs

Wing-Nut Expansion Plugs

Wing-Nut Expansion Plugs

Twist the wing nut to expand the seal without needing tools

Expansion Plugs with Bypass

Expansion Plugs with Bypass

Use the bypass tube to add fluid to pipelines or to reduce pressure

T-Handle Expansion Plugs

T-Handle Expansion Plugs

Easier to grip and twist than wing nuts, especially when wearing gloves

Hex-Nut Expansion Plugs

Hex-Nut Expansion Plugs

Install with a nutdriver for a tighter seal than hand-tightened nuts

Long-Reach Hex-Nut Expansion Plugs with Bypass

Long-Reach Hex-Nut Expansion Plugs with Bypass

Use the bypass tube to add air and fluid to pipelines or to reduce pressure

Air- and Water-Inflatable Plugs

Air- and Water-Inflatable Plugs

Fit into tight pipe joints with our most flexible expansion plugs

Quick-Snap Expansion Plugs

Quick-Snap Expansion Plugs

Turn the handle to expand the seal, then snap it down for fast installation

Air-Inflatable Plugs

Air-Inflatable Plugs

Temporarily seal wide and out-of-round pipes

Long-Reach Wing-Nut Expansion Plugs

Long-Reach Wing-Nut Expansion Plugs

Insert deep within your pipe to seal it off from the inside

Quick-Locking Expansion Plugs

Quick-Locking Expansion Plugs

Save time by installing with just one quarter turn

Air-Inflatable Plugs with Bypass

Air-Inflatable Plugs with Bypass

Temporarily seal wide and out-of-round pipes, with a bypass tube to add air and fluid

Square-Head Expansion Plugs

Square-Head Expansion Plugs

Turn the square head into the sealing ring to close off pipelines

Expansion Plugs for Conduit

Expansion Plugs for Conduit

Seal conduit openings to keep water, dirt, and animals from damaging your wiring

Air-Inflatable Plugs for Tee Connections

Air-Inflatable Plugs for Tee Connections

Often used for plumbing tests, thread into tees and inflate to block flow

Air- and Water-Inflatable Plugs for Wye-Joints

Air- and Water-Inflatable Plugs for Wye-Joints

Extra long to seal off two pipes in a wye-joint at the same time

Expansion Plugs for Cleanout Tees

Expansion Plugs for Cleanout Tees

No need to inflate with an air compressor or hand pump

Remote-Access Air-Inflatable Plugs

Remote-Access Air-Inflatable Plugs

Plug pipe that’s hard to reach, such as underground sewage lines

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)